import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import users from '../components/user/users.vue'
import rights from '../components/power/Rights.vue'
import roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import List from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/order.vue'

Vue.use(VueRouter)

const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', component: Login },
  { path: '/Home', component: home, redirect: '/welcome', 
  children: [
    { path: '/welcome', component: Welcome },
    { path: '/users', component: users },
    { path: '/rights', component: rights },
    { path: '/roles', component: roles },
    { path: '/categories', component: Cate },
    { path: '/params', component: Params },
    { path: '/goods', component: List },
    { path: '/add', component: Add },
    { path: '/orders', component: Order },

  ] },
]

const router = new VueRouter({
  routes
})

router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  //  next() 放行     next('/login') 强制跳转
  if (to.path === '/login') return next()
  // 获取 token 
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next("/login")
  next()
})

export default router
